Trouble Shooting - M&C PSS Series Instruction Manual

16

TROUBLE SHOOTING

The following table aims to point out possible operational problems and offer solutions to such
problems (not applicable during the starting procedure).
Indication Problem
Upper LED of
Interruption of
the cooler lights
gas flow;
up red
Middle LED on
Cooler in
cooler is green;
operation but
gas flow
interrupted;
Alarm LED on
the LA electro-
nics is red (see
4);
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Possible Cause
No voltage;
Cooler does not
function.
Cooler alarm registers
'excess temperature'.
Cooler turns gas
measuring pump of
automatically.
Membrane pump
faulty;
Contamination of the
membrane pump;
Sample probe/hose
clogged up or lead
squashed;
Sample gas hose to
analyser clogged up or
squashed;
Optional liquid alarm
sensor:
Sensor turns
measuring pump off
automatically;
Optional flowmeter(s):
Needle valve closed.
PSS-5 | 1.00.03
Check/Solution
Check supply voltage with model type plate;
OK?
Check if supply voltage plug is inserted correctly
and if the main switch is turned in position "1"
OK?
Check fine fuse on connector block  (Figure 2);
OK?
Ambient temperature too high.
OK?
Free convection in case impaired  case
temperature too high;
OK?
Cooler error (check
ECP1000/3000).
OK?
Check voltage on clamps X1/11 and X1/8;
OK?
Remove the hoses at head of pump and check;
OK?
Clean pump if necessary;
OK?
Remove tube at gas inlet (see chapter 12.1);
Gas flow?
Clean contaminated lead or replace;
No gas flow?
Remove sample gas hose on analyser side and
check via hose thread if sample gas flows;
No gas flow?
Clean contaminated leads or replace;
Gas flows?
Momentary overloading of the cooler due to
excessive amount of condensate;
OK?
Check hoses for condensate removal;
OK?
Check Pre-filter  and if necessary replace;
OK?
Check peristaltic pump tube (see manual SR25.1);
OK?
Check peristaltic pump (see manual SR25.1);
OK?
Check cooler according to instruction manual;
Adjust needle valve(s) to the desired flow.
instruction manual
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